﻿/*
 *   _____                                ______
 *  /_   /  ____  ____  ____  _________  / __/ /_
 *    / /  / __ \/ __ \/ __ \/ ___/ __ \/ /_/ __/
 *   / /__/ /_/ / / / / /_/ /\_ \/ /_/ / __/ /_
 *  /____/\____/_/ /_/\__  /____/\____/_/  \__/
 *                   /____/
 *
 * Authors:
 *   钟峰(Popeye Zhong) <zongsoft@gmail.com>
 *
 * Copyright (C) 2010-2020 Zongsoft Studio <http://www.zongsoft.com>
 *
 * This file is part of Zongsoft.Core library.
 *
 * The Zongsoft.Core is free software: you can redistribute it and/or modify
 * it under the terms of the GNU Lesser General Public License as published by
 * the Free Software Foundation, either version 3.0 of the License,
 * or (at your option) any later version.
 *
 * The Zongsoft.Core is distributed in the hope that it will be useful,
 * but WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
 * GNU Lesser General Public License for more details.
 *
 * You should have received a copy of the GNU Lesser General Public License
 * along with the Zongsoft.Core library. If not, see <http://www.gnu.org/licenses/>.
 */

using System;

namespace Zongsoft.Diagnostics
{
	public class LogEntry
	{
		#region 构造函数
		public LogEntry(LogLevel level, string source, string message, object data = null) : this(level, source, message, null, data) { }

		public LogEntry(LogLevel level, string source, Exception exception, object data = null) : this(level, source, null, exception, data) { }

		public LogEntry(LogLevel level, string source, string message, Exception exception, object data = null)
		{
			if(exception == null)
			{
				if(data is Exception ex)
				{
					exception = ex;
					data = null;
				}
			}

			this.Level = level;
			this.StackTrace = string.Empty;
			this.Source = string.IsNullOrEmpty(source) ? (exception == null ? string.Empty : exception.Source) : source.Trim();
			this.Exception = exception;
			this.Message = message ?? (exception == null ? string.Empty : exception.Message);
			this.Data = data ?? (exception != null && exception.Data != null && exception.Data.Count > 0 ? exception.Data : null);
			this.Timestamp = DateTime.Now;
		}
		#endregion

		#region 公共属性
		public LogLevel Level { get; }

		public string Source { get; }

		public Exception Exception { get; }

		public string Message { get; }

		public string StackTrace { get; internal set; }

		public object Data { get; }

		public DateTime Timestamp { get; }
		#endregion

		#region 重写方法
		public override string ToString()
		{
			return $"[{this.Level}]{this.Source}@{this.Timestamp}";
		}
		#endregion
	}
}
